Most Emission-Efficient Bulk Carriers

Ships ranked by AER (Annual Efficiency Ratio) — grams of CO₂ emitted per tonne of deadweight carried one nautical mile (g CO₂/dwt·nm), the IMO carbon-intensity metric behind the CII rating — from official EU MRV emissions data for reporting year 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2025)

#557 of 3,436 bulk carriers

CO₂ intensity

3.3 g CO₂/dwt·nm

vs segment average (4.71)

-30% greener

Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates

Size (DWT)

All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT

Year

2025 2024

3,507

vessels ranked

1.74

greenest (g CO₂/t·nm)

4.46

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
551	BASIC PASSION IMO 1083425	82,073	2025	229 m	MAN-B&W 6G50ME-C9	3.3	A
550	CL SPRUCE IMO 1021374	64,181	2025	200 m	MAN-B&W 6S50ME-C9	3.3	A
549	LOTUS IMO 9518098	82,224	2012	229 m	MAN - 6S60MC-C	3.3	A
548	SAKIZAYA DIAMOND IMO 9697868	81,938	2013	229 m	MAN - 6S60ME-C	3.3	A
544	VIBEKE IRIS IMO 9744996	81,886	2016	229 m	Mitsui - 6S60ME-C9	3.3	A
552	SPIRIT OF HO-PING IMO 9433638	82,152	2011	229 m	MAN - 6S60MC-C	3.3	A
557	PORT NARA IMO 9965863	64,611	2021	200 m	J-ENG 6UEC50LSH-EcoC3	3.3	A
561	CL LIANYUNGANG IMO 9747302	81,058	2018	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.3	A
560	KLARA OLDENDORFF IMO 9849007	81,262	2019	229 m	Yichang - 6S60ME-C8	3.3	A
562	GUO YUAN 12 IMO 9579250	75,946	2011	225 m	Wärtsilä - 5RT-flex58T	3.3	A
559	RIXTA OLDENDORFF IMO 9598567	121,624	2008	260 m	MAN - 6S60MC-C	3.3	A
558	GOLDEN DAY IMO 9209128	75,595	2000	225 m	Mitsui - 7 S 50 MC-C	3.3	A
563	ROYAL NEPTUNE IMO 9851517	80,873	2020	229 m	MAN - 6S60ME-C	3.3	A
564	SAKIZAYA QUEEN IMO 9783148	81,858	2018	229 m	Mitsui - 6S60ME-C8	3.3	A
572	PORT OSHIMA IMO 9932804	64,624	2022	200 m	Japan Engine Corp - Akashi 6UEC50LSH-Eco3	3.3	A
573	FRATERNELLE IMO 9693422	82,086	2016	229 m	MAN - 5S60MC-C8	3.3	A
569	DARYA DEVI IMO 9627760	81,930	2013	229 m	Hyundai - 6S60MC-C	3.3	A
571	CRIMSON EMPRESS IMO 9485021	82,250	2014	229 m	Mitsui - 6S60MC-C	3.3	A
570	NORD TITAN IMO 9701164	77,095	2014	225 m	MAN - 6S60MC	3.3	A
568	EREIKOUSSA IMO 9591739	178,895	2012	292 m	Hyundai - 6S70MC-C	3.3	A
567	RB JORDANA IMO 9730816	81,301	2016	229 m	STX - 5G60ME-C9	3.3	A
566	LENI IMO 9362982	77,008	2008	225 m	Hitachi - 6S60MC	3.3	A
565	SANTA SOPHIA IMO 9404766	106,498	2009	255 m	Mitsui - MITSUI MAN B&W 6S60MC	3.3	A
574	BW MATSUYAMA IMO 9836488	81,810	2019	229 m	MAN - 6S60ME-C8	3.3	A
577	PORT ORIENT IMO 9735103	61,530	2017	200 m	Hudong Heavy Machinery - 6S50ME-B9	3.3	A
576	KEY HUNTER IMO 9461312	82,099	2011	229 m	Mitsui - 7 S 50 MC-C	3.3	A
578	AQUILA OCEAN IMO 9825520	82,071	2015	229 m	Mitsui - 6S60ME-C8	3.3	A
575	BTG BALFOUR IMO 9952452	82,245	2024	229 m	MAN - 6G50ME-C9	3.3	A
584	CHARIKLIA JUNIOR IMO 9548201	92,932	2011	229 m	STX - 6S60MC-C	3.3	A
580	MELTEMI IMO 9952402	82,206	2022	229 m	MAN - 6G50ME-C9	3.3	A
579	BULK GREECE IMO 9851323	81,606	2019	229 m	MAN - 6S60ME-C8	3.3	A
583	SAKIZAYA FUTURE IMO 9713818	81,938	2016	229 m	MAN - 6S60ME-C8	3.3	A
582	SASEBO GLORY IMO 9740823	85,020	2016	229 m	MAN - 6S60ME-C8	3.3	A
581	DAISY GLORY IMO 9847853	82,058	2019	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.3	A
587	KANKO MARU IMO 9950911	82,325	2022	229 m	MAN - 6S60ME-C10	3.3	A
586	FABULOUS DIVA IMO 9984558	63,711	2024	200 m	HITACHI ZOSEN CORPORATION ARIAKE WORKS	3.3	A
588	SSI CONSTELLATION IMO 1039967	64,608	2025	200 m	MAN-B&W 6S50ME-C9	3.3	A
585	JIN HAI RUN IMO 1043827	63,907	2025	200 m	MAN-B&W 6G50ME-C9	3.3	A
592	RGL FIRST IMO 9772864	82,215	2017	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.3	A
589	STORMHARBOUR IMO 9519157	76,583	2009	225 m	Kawasaki - 6S60MC	3.3	A
591	PROGRESS TRADER IMO 9936769	82,221	2022	229 m	Yichang - 6S60ME-C8	3.3	A
590	CORNALIN IMO 9947263	82,403	2023	229 m	Mitsui Engineering & Shipbuilding C Ltd - Japan 6S60ME-C10-EGRBP	3.3	A
597	ARCHON IMO 9828948	82,084	2018	229 m	DALIAN MARINE - 6S60ME-C8	3.3	A
598	AFFINITY DIVA IMO 9919917	88,993	2022	229 m	MAN - 6S60ME-C10	3.3	A
596	STAR CAPOEIRA IMO 9719537	81,253	2015	229 m	MAN - 6S60ME-C8	3.3	A
595	GALAPAGOS IMO 9473169	75,660	2010	225 m	Hudong Heavy Machinery - 5S60MC	3.3	A
594	S RUMBA IMO 9712498	84,867	2015	229 m	MAN - 6S60MC-C	3.3	A
593	SHANDONG XIN SHUN IMO 1026544	82,135	2025	229 m	MAN-B&W 6G50ME-C9	3.3	A
600	NSC BINGO IMO 1036501	64,090	2025	200 m	MAN-B&W 6S50ME-C9	3.4	A
599	AFRICAN ICEBIRD IMO 9728203	81,791	2016	229 m	Mitsui - 6S60ME-C	3.4	A

Page 12 of 69 — 3,436 vessels

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Engine intelligence

Which engines power the greenest fleets?

The main engine is the single largest CO₂ source on board — typically well over 80% of a ship's emissions come from propulsion. We aggregated this ranking the other way around: every engine design is scored by the measured carbon intensity of the vessels carrying it, licensee-built units merged under their design brand. The verdict from the 2025 data — modern dual-fuel designs like MAN B&W's ME-GI and WinGD's X-DF families, together with EGR/SCR-abated and ultra-long-stroke G-type engines, consistently power the most emission-friendly ships in service.

Emission-friendly engine ranking

AER (Annual Efficiency Ratio) = annual CO₂ emissions ÷ (deadweight × distance sailed), the IMO carbon-intensity metric used for CII ratings. It is built only from measured CO₂, distance and deadweight — not the self-reported cargo transport-work figure, which is unreliable. Implausible outliers (top 2% per segment) are excluded. Grade A–E reflects each vessel's rank within its segment. Source: EMSA THETIS-MRV.